lang/gcc6-aux: Remove useless ARMv6 patch

By Makefile restriction, gcc6-aux can only be built on x86-64 and i386.
This restriction is due to a lack of a bootstrap compiler required for
Ada.  Thus, the recently added ARMv6 patch has no effect (plus gcc6-aux
is updated by diff-* patchsets and single patches can interfer with
that scheme.)

lang/gcc6-aux/files/patch-armv6-hf-support

@@ -1,18 +0,0 @@
---- UTC
---- gcc/config.gcc.orig	2016-05-25 22:53:15.930993000 +0200
-+++ gcc/config.gcc	2016-05-25 22:54:06.087115000 +0200
-@@ -1026,11 +1026,9 @@
- 	case $target in
- 	armv6*-*-freebsd*)
- 	    tm_defines="${tm_defines} TARGET_FREEBSD_ARMv6=1"
--	    ;;
--	esac
--	case $target in
--	arm*hf-*-freebsd*)
--	    tm_defines="${tm_defines} TARGET_FREEBSD_ARM_HARD_FLOAT=1"
-+	    if test $fbsd_major -ge 11; then
-+		tm_defines="${tm_defines} TARGET_FREEBSD_ARM_HARD_FLOAT=1"
-+	    fi
- 	    ;;
- 	esac
- 	with_tls=${with_tls:-gnu}